Is there any functionality to Watchdog that isn't in the documentation? I play on a private server and I notice when camping conquest hnms the same characters have this uncanny ability to show up whenever there is a spawn even though I'm very often alone. If it was occasionally I could chalk it up to coincidence but it's something else, perhaps some other plugin. At any rate it seems pretty convenient even though in all likelihood it would violate my servers rules.

WatchDog does not have any other features than what is shown/presented publicly.

Some people abuse things like this with other plugins like AshitaCast to create an auto-scanner to force rescanning with WatchDog over and over. But outside of that there isn't anything else that has been abused with it. You can do other things though to tell if something is spawned/alive in a zone from anywhere via packet injection that those people could be abusing.